Term describing people originating from Southern California. If you have a friend originating from that region, and he's sometimes claiming to be special and different to other californians and even the rest of the US and A, than you can call him a "socalist". That makes the whole thing about being special ironically sound like a movement, and plus, if you throw in some swearwords (eg. "evil socalist") - it has the side effect of sounding like evil socialist - a term widely known in the whole anti-socialism propaganda of the right wing politicians.

A: Steve is living in europe now for a hole year. Actually he's from Southern California, he misses his family badly.

B. Well he's such an evil socalist - no surprise they kicked him out of California.